Table 2:

MR imaging and cranial ultrasound data and findings at presentation

No.Percentage
Imaging data
 MR imaging and US7
 MR imaging only8
 US only1
Age at imaging (range) (day)
 MR imaging3.2 (1–9)
 US2.7 (1–7)
MR imaging field strength (1.5T:3T)12:3
MR imaging sequences
 Core sequencesa15/15
 GRE T2*WI11/15
 SWI4/15
MRV performed
 On initial MRI10/15
 On repeat MRI within 4 days3/15
MRA performed
 On initial MRI9/15
 On repeat MRI within 6 weeks3/15
Lesion laterality (right:left)10:662%:38%
Lesion location
 Temporal11/1669%
 Frontal3/1619%
 Parietal1/166%
 Occipital1/166%
Parenchymal diffusion restriction15/15100%
Parenchymal hemorrhage11/1550%
Intraventricular hemorrhage3/1518%
Midline shift8/1550%
Yin-yang sign on MRI15/15100%
Yin-yang sign on US6/6100%
  • Note:—US indicates ultrasound.

  • a The core MR images include sagittal and axial T1WI, axial and coronal FSE T2WI, and axial and coronal DWI.